WEBVTT ALLISON: THE KIDS ARE BACK INSCHOOL.FALL IS COMING AND SOON YOU'LLrtBE TURNING ON THE HEAT, AND WITHTHAT, COMES RENEWED RISK OFCARBON MONOXIDE POISIONING.APPLIANCES LIKE GAS FIRES,BOILERS, CENTRAL HEATINGrtSYSTEMS, WATER HEATERS CAN ALLPUT YOU AT RISK.JOSHUA: THAT'S RIGHT, NOW CARBONMONOXIDE IS AN ODORLESS,COLORLESS GAS, SO SNEAKY IT'SCALLED THE SILENT KILLER rtAND 40/29'S KATIE DAVIDSON SPOKEWITH A SPRINGDALE WOMAN WHO LOSTA LOT TO THIS KILLER.>>rt HE GAVE ME A KISS, TOLD ME HELOVED ME AND LEFT.REPORTER: TRAVIS AND HIS SONTRAVER WERE INSIDE THEIR NEWLYPURCHASED REPAIR SrtHOP INSPRINDALE.THEY WERE TRYING TO FIX THECLUTCH ON THE FAMILY TRUCK, THEY-- FAMILY TRUCK.>>rt THEY GOT INTO THEIRFATHER-SON FIGHTS TOO, SO I CANJUST IMAGINE THAT NIGHT YOU KNOWTHAT THEY WERE TALKING ANDLAUGHING AND GIGGLING AND ALSOBICKERING WITH EACHOTHER OVERrtWHAT NEEDED TO BE DONE AND HOWTO DO IT.REPORTER: TINA WENT TO BED BUTWHEN SHE WOKE UP NEITHER OF THEMWERE HOME.>>rt I COULDN'T GET IN TOUCH WITHTHEM, NEITHER OF THEM WOULDANSWER THEIR PHONES.REPORTER: SHE ASKED SPRINGDALEPOLICE TO DO A WELFARE CHECK ATTHE SHOP.>>rt HE SAID, I'M SORRY, MA'AM.KATIE:rt THE TWO HAD BEEN POWERINGTHE SHOP WITH A GENERATOR AND SO-->> IT IS BELIEVED THEY SHUT THEBIG ROLLING GARAGE DOOR TOrtPROBABLY STOP THE WIND AND RAINFROM BLOWING IN ON THEM.KATIE: WITH THE GENERATOR INSIDETHE GARAGE AND NO WAY FOR THEGAS TO ESCAPE, POLICE SArtID THEROOM COULD HAVE BEEN FILLED WITHCARBON MONOXIDE IN TEN MINUTES.>> I ASSUME THEY THOUGHT ITWOULD BE JUST A FEW MINUTES ANDIT WOULD BE OK BECAUSE I KNOWTHEY KNEW BETTER.rtINSTEAD, THEY MADE THESPLIT-SECOND DECISION THAT ITWOULD BE OK, AND NOW THEY'RE NOTHERE WITH US ANYMORE.KATIE: THE FAMILY HAD JUST MOVEDrtIN TO A NEW HOME IN SPRINGDALE,READY TO BEGIN A NEW LIFE.>> IT'S NOT HOME ANYMORE.IT'S JUST A HOUSE WE LIVE IN.rtKATIE: TINA TOLD US TRAVIS ANDTRAVER WERE ALWAYS HELPINGOTHERS AND SHE HOPES THEIRLEGACY CAN BE A WARNING ABOUTTHE SILENT KILLER.>> SO MUCH COULD HAVE BEENrtPREVENTED I MEAN WE COULD HAVETHEM HERE TODAY HAD THEY KNOWNTHE FULL DANGERS OF CARBONMONOXIDE AND THE POTENTIAL TORUIN THEIR LIVES.rtKATIE: KATIE DAVIDSON, 40/29NEWS.JOSHUA: EARLY SYMPTONS OF CARBONMONOXIDE POISONING INCLUDErtHEADACHE, DIZZINESS, KNOWLEDGE A-- NOKIA -- NAUSEA AND CHESTPAIN.THE CENTERS FOR DISEASE CONTROLSAYS EACH YEAR MORE THAN 400AMrtERICANS DIE FROM UNINTENTIONALCARBON MONOXIDE POISONING.YOU CAN FIND CARBON MONOXIDEDETECTORS AT MOST LOCAL HARDWARESTORES, THE CHEAPEST ONES ARE

Travis Wall and his son Traver Wall were inside their newly purchased repair shop in Springdale. They were trying to fix the clutch on the family truck.

Tina McCool, Travis' fiancé, went to bed, but when she woke up, neither of them were home.

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She asked Springdale Police to do a welfare check at the shop. Police found the father and son dead, of suspected carbon monoxide poisoning.

The two had been powering the shop with a generator and it's believed they shut the rolling door to the garage to stop the wind and rain from blowing in on them.

With the generator inside the garage, and no way for the gas to escape, police said the room could have been filled with carbon monoxide in ten minutes.

The family had just moved into a new home in Springdale and were ready to begin a new life.

Tina told 40/29 News that Travis and Traver were always helping others, and she hopes their legacy can be a warning about the silent killer.

She said she still thinks about a conversation she had with Travis that night, when he told her he had got the generator working. She said she wishes she had asked more questions about where he was putting it. She knows now, one question could have been the difference between life and death.